@article{Twenge2017,
author = {Twenge, J.M. and Sherman, R.A. and Wells, B.E.},
title= {Sexual inactivity during young adulthood is more common among U.S. Millennials and iGen: Age, period, and cohort effects on having no sexual partners after age 18},
year = {2017},
doi = {10.1007/s10508-016-0798-z},
volume = {46},
pages = {433--440},
}